721
FNCA52 TJSJ 010730
FWFSJU
FIRE WEATHER PLANNING FORECAST FOR PUERTO RICO
NATIONAL WEATHER SERVICE SAN JUAN PR
330 AM AST FRI MAY 1 2026
DISCUSSION
NO FIRE DANGER IS EXPECTED TODAY.
PRZ014-012000-
SOUTHEAST COASTAL PLAINS-
330 AM AST FRI MAY 1 2026
TODAY TONIGHT SAT
CLOUD COVER PCLDY MCLEAR PCLDY
PRECIP TYPE TSTMS SHOWERS SHOWERS
CHANCE PRECIP (%) 40 10 20
TEMP (24H TREND) 89 (+3) 71 (-2) 89
RH % (24H TREND) 52 (-9) 88 (-2) 48
WIND 20FT/EARLY(MPH) E 9 E 12 E 17
WIND 20FT/LATE(MPH) SE 12 NE 10 SE 17
MIXING HGT(FT-AGL/MSL)3970 4550
TRANSPORT WND (MPH) E 9 E 16
VENT RATE (KT-FT) 31760 63700
DISPERSION 5 5
DSI 6 4 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ015-012000-
SOUTHERN HILLS-
330 AM AST FRI MAY 1 2026
TODAY TONIGHT SAT
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE TSTMS SHOWERS SHOWERS
CHANCE PRECIP (%) 60 20 20
TEMP (24H TREND) 85 (+4) 68 (-3) 86
RH % (24H TREND) 65 (-9) 96 (+1) 62
WIND 20FT/EARLY(MPH) E 8 E 10 E 12
WIND 20FT/LATE(MPH) SE 9 E 10 SE 13
MIXING HGT(FT-AGL/MSL)4970 4940
TRANSPORT WND (MPH) E 8 E 15
VENT RATE (KT-FT) 34790 64220
DISPERSION 5 5
DSI 6 3 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ016-012000-
NORTH COASTAL PLAINS-
330 AM AST FRI MAY 1 2026
TODAY TONIGHT SAT
CLOUD COVER PCLDY MCLEAR PCLDY
PRECIP TYPE TSTMS SHOWERS SHOWERS
CHANCE PRECIP (%) 40 30 20
TEMP (24H TREND) 89 (+2) 71 (-2) 89
RH % (24H TREND) 60 (-9) 97 (+2) 59
WIND 20FT/EARLY(MPH) E 9 E 11 E 13
WIND 20FT/LATE(MPH) E 11 SE 10 E 14
MIXING HGT(FT-AGL/MSL)3870 4710
TRANSPORT WND (MPH) E 8 E 14
VENT RATE (KT-FT) 27090 56520
DISPERSION 5 5
DSI 6 5 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ017-012000-
NORTHERN HILLS-
330 AM AST FRI MAY 1 2026
TODAY TONIGHT SAT
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE TSTMS TSTMS TSTMS
CHANCE PRECIP (%) 70 70 50
TEMP (24H TREND) 87 (+2) 68 (-3) 87
RH % (24H TREND) 64 (-6) 97 (0) 62
WIND 20FT/EARLY(MPH) E 8 E 9 E 9
WIND 20FT/LATE(MPH) E 9 SE 8 E 12
MIXING HGT(FT-AGL/MSL)4890 5090
TRANSPORT WND (MPH) SE 6 E 10
VENT RATE (KT-FT) 24450 45810
DISPERSION 5 5
DSI 6 3 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ018-012000-
WEST COAST-
330 AM AST FRI MAY 1 2026
TODAY TONIGHT SAT
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE TSTMS SHOWERS TSTMS
CHANCE PRECIP (%) 70 60 40
TEMP (24H TREND) 89 (+1) 71 (-1) 90
RH % (24H TREND) 63 (-5) 98 (+2) 61
WIND 20FT/EARLY(MPH) E 10 E 10 E 13
WIND 20FT/LATE(MPH) E 10 E 10 SE 16
MIXING HGT(FT-AGL/MSL)4800 4990
TRANSPORT WND (MPH) SE 6 E 12
VENT RATE (KT-FT) 24000 49900
DISPERSION 5 5
DSI 6 4 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ019-012000-
EASTERN INTERIOR-
330 AM AST FRI MAY 1 2026
TODAY TONIGHT SAT
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE TSTMS SHOWERS SHOWERS
CHANCE PRECIP (%) 50 30 30
TEMP (24H TREND) 87 (+3) 69 (-3) 87
RH % (24H TREND) 62 (-9) 96 (0) 61
WIND 20FT/EARLY(MPH) SE 9 E 11 E 13
WIND 20FT/LATE(MPH) E 10 E 11 E 12
MIXING HGT(FT-AGL/MSL)4470 5000
TRANSPORT WND (MPH) SE 9 SE 15
VENT RATE (KT-FT) 35760 65000
DISPERSION 5 5
DSI 6 3 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ022-012000-
LUQUILLO MOUNTAIN RANGE-
330 AM AST FRI MAY 1 2026
TODAY TONIGHT SAT
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE TSTMS SHOWERS SHOWERS
CHANCE PRECIP (%) 60 30 40
TEMP (24H TREND) 83 (+5) 68 (-3) 83
RH % (24H TREND) 66 (-12) 98 (0) 65
WIND 20FT/EARLY(MPH) SE 8 E 9 E 12
WIND 20FT/LATE(MPH) SE 10 E 8 E 11
MIXING HGT(FT-AGL/MSL)4010 4530
TRANSPORT WND (MPH) SE 10 E 16
VENT RATE (KT-FT) 36090 63420
DISPERSION 5 5
DSI 6 4 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ023-012000-
CENTRAL MOUNTAIN RANGE-
330 AM AST FRI MAY 1 2026
TODAY TONIGHT SAT
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE TSTMS TSTMS TSTMS
CHANCE PRECIP (%) 80 60 40
TEMP (24H TREND) 85 (+5) 65 (-4) 85
RH % (24H TREND) 68 (-9) 99 (+2) 65
WIND 20FT/EARLY(MPH) SE 5 E 8 E 9
WIND 20FT/LATE(MPH) SE 6 E 5 SE 10
MIXING HGT(FT-AGL/MSL)5510 5490
TRANSPORT WND (MPH) E 6 E 10
VENT RATE (KT-FT) 27550 49410
DISPERSION 5 5
DSI 5 2 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ024-012000-
CAYEY MOUNTAIN RANGE-
330 AM AST FRI MAY 1 2026
TODAY TONIGHT SAT
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE TSTMS SHOWERS SHOWERS
CHANCE PRECIP (%) 60 30 30
TEMP (24H TREND) 83 (+4) 69 (-1) 82
RH % (24H TREND) 67 (-10) 98 (-1) 67
WIND 20FT/EARLY(MPH) SE 6 E 8 E 11
WIND 20FT/LATE(MPH) SE 8 E 8 E 11
MIXING HGT(FT-AGL/MSL)4470 4660
TRANSPORT WND (MPH) E 9 E 16
VENT RATE (KT-FT) 35760 65240
DISPERSION 5 5
DSI 6 3 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ025-012000-
VIEQUES-
330 AM AST FRI MAY 1 2026
TODAY TONIGHT SAT
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 40 40 40
TEMP (24H TREND) 87 (+2) 74 (-1) 86
RH % (24H TREND) 59 (-7) 91 (+1) 61
WIND 20FT/EARLY(MPH) SE 11 E 13 E 16
WIND 20FT/LATE(MPH) E 11 E 13 E 12
MIXING HGT(FT-AGL/MSL)2960 3600
TRANSPORT WND (MPH) E 12 E 17
VENT RATE (KT-FT) 29600 54000
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ026-012000-
CULEBRA-
330 AM AST FRI MAY 1 2026
TODAY TONIGHT SAT
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE TSTMS SHOWERS SHOWERS
CHANCE PRECIP (%) 40 30 30
TEMP (24H TREND) 89 (+3) 75 (-2) 89
RH % (24H TREND) 60 (-7) 91 (+3) 60
WIND 20FT/EARLY(MPH) E 10 E 13 E 16
WIND 20FT/LATE(MPH) E 11 E 13 E 13
MIXING HGT(FT-AGL/MSL)2940 3510
TRANSPORT WND (MPH) E 12 E 18
VENT RATE (KT-FT) 29400 56160
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ027-012000-
SOUTHWEST COASTAL PLAINS AND MONA ISLAND-
330 AM AST FRI MAY 1 2026
TODAY TONIGHT SAT
CLOUD COVER MCLEAR MCLEAR MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 30 20 20
TEMP (24H TREND) 90 (+3) 72 (-2) 90
RH % (24H TREND) 52 (-7) 93 (0) 48
WIND 20FT/EARLY(MPH) E 13 E 12 E 19
WIND 20FT/LATE(MPH) SE 14 E 14 SE 20
MIXING HGT(FT-AGL/MSL)4900 4930
TRANSPORT WND (MPH) E 10 E 21
VENT RATE (KT-FT) 44100 88740
DISPERSION 5 5
DSI 6 5 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
VIZ001-012000-
SAINT THOMAS AND SAINT JOHN-
330 AM AST FRI MAY 1 2026
TODAY TONIGHT SAT
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 30 20 30
TEMP (24H TREND) 86 (+2) 75 (-2) 86
RH % (24H TREND) 62 (-6) 92 (+5) 63
WIND 20FT/EARLY(MPH) SE 10 E 14 E 16
WIND 20FT/LATE(MPH) E 11 E 14 E 12
MIXING HGT(FT-AGL/MSL)3150 3460
TRANSPORT WND (MPH) SE 12 E 20
VENT RATE (KT-FT) 31500 58820
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
VIZ002-012000-
ST CROIX-
330 AM AST FRI MAY 1 2026
TODAY TONIGHT SAT
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 30 30 30
TEMP (24H TREND) 87 (+2) 74 (-2) 87
RH % (24H TREND) 62 (-6) 91 (+2) 63
WIND 20FT/EARLY(MPH) E 12 E 13 E 13
WIND 20FT/LATE(MPH) E 12 E 13 E 13
MIXING HGT(FT-AGL/MSL)4190 4210
TRANSPORT WND (MPH) E 12 E 17
VENT RATE (KT-FT) 41900 63150
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
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